Spraying device



Nov. 8, 1932. R; KIMATLACK 1,837,415

SPRAYING DEVICE Filed Sept. 9, 193C? 2 Sheets-Sheet 1 iEvQfff/M %&

Nov. 8, 1932. MA LA 1,887,416

SPRAYING DEVICE Filed Sept. 9, 30 2 Sheets-Sheet 2 Patented Nov. 8, 19321 Application filed September 9,1930. Serial-No. 480,760; The presentinvention relates to methodsof the more. even will be its pressure andappliand devices for spraying material, and is parcation to the articlebein'gcoated. V ticularly adapted to the distribution of fluids Theabove objects and: featurcsof my'in-. ona'paper surface or a similararticle. Such vention, as Well asthe details of construction 3- fluidsmay constitute vany coating material, of a single embodiment thereof,will be readi- V such as coloring, gumming, wax, glue, and lyunderstoodfrom the following detailed other materials. The method anddevice of description 'takenxinconnection with the acthe invention'are,however, not limited to companying drawings.= thedistribution of fluids,since they are apw In the drawings I 51 plicable also to thedistribution of any mate- Fig. 1 is alview showing the' specific em- .00

rial which can be sprayed, suchfor example bodiment ofthe'device of myinvention in as material in a finely divided or powdered side elevation,aportion of the containers bestate. I ing broken away to enable aclearer under- It is the general object of my invention to standing ofthe detailsof the device. a

1 .1 provide a device of the class indicated which I Fig. 2 is asectional view along line II. II ,66

1s simplein construction but highly efficient of Fig. 1; g EV g ,7 inoperation, attaining results heretoforeim- Fig. dis a view partly insection of one end possible with devices-of the prior art; of mydeviceshowing the details ofconstruc- A further object of the invention is toprotion thereof, especially the details of the, ad

vide a device which operates in accordance justable feature of the outerconcentric chamwith anovel method to obtainan extremely-her; and 4 evencoating of any desired thickness of ma- Fig; 4; is a sectional viewalong line H terial on the article to be coated. This: obof Fig; J f Iject is attained by a method which comprises "Referring to the severalviews of thedraw- 11-31 the expansion of compressed gaseous matter,ings, there is shown a horizontally disposed such for example ascompressed air, .to hollow shaft 1 which is fixedly mounted in equalizeits pressure throughout, and the supporting 'standards3 and 4; 1 Theshaft-l 7 "emission oftheexpanded gaseous matter from is provided, withnozzles 2-which extend F an elongated slot nozzle which extends thearounda' substantial part of 'its periphery 3:5 full width of-thearticle being coated. In this in any desired arrangement- '(see' Fig; 2)

manner, a stream of gaseous matter of even- These nozzles may be formedas anintegral pressure throughout the entire stream is 'obpart A of the"shaft, or they may comprise tained and may be directedagainst particlesthreaded members which are adaptedto be of the material to be sprayed ordistributed, screwed into threaded holes in the shaft.

forcing them on to the article being coated. 11 End Of Shaft 1 isprovided with, a. cap 35 A device constructed in accordance with mymember W 111E311 may ke fIII f a hre ded invention and which operates inaccordance w QR h r dj f h f with the aboveoutlined method, comprises aT p po fi Q ll l ZQ pro d JO plurality of concentrically arrangedchambers fi e flq 9 fin f ,shaft h having expanding noZZlestherebetween, the other i d f h shaft dttaqhed to l outermost chamberhaving an elongated slot m b 9f deslred and nozzle for emitting the expnded gaseous gg: 3 5 393? g ;;g:i2 m%% A :31: g t gi d g device. Shaft 1is provided adjacent support .35 t" a S ng l em n 3 with aroller bearinv7 which may comprise of my device which comprises 9 K two asuitable'housi'ng oi race members 8 and 9 concentncany anged m s, W besee Fig. 3) and suitable roller members 10. pp h y n of expandlngThe'purpose of this bearing is to provide a F Chambers ay be pr n of ure, the rotatable mounting for gear 11 on the hollow greater theexpansion of the emitted matter, shaft.- Gear 11 comprises a spiderportion 9 40 i a V 1 7 Inside the screen member and adjacent thebearings which support the screen member,

having the desired speed and speed control means.

The peripheral portion of gear 11 hasan" extending flange 16 with spacedholes there about.- A screenmember 18, which in the present instancetakes a cylindrical or squirrel cage form, has one end attachedto theflange 16 by means of suitable bolts 17 The end of the screen memberfits snugly over the flange, and as many bolts as is necessary toprovide asecure connection may be used. The other end of the screenmember is attached to a spider member :19, which has an extending flange20 similar to flange 16 of the gear. In this case also the end of thescreen fits snugly over the flange, and aplurality of bolts comprise theattaching or securing means. The spider 19 is mounted upon the hollowshaftl by means of a suitable roller bearing 21, in the same manner asgear 11 is mounted thereon. In this instance also, suitable spacers 'orcollars may be used if necessary. From the description thus far, it willa be apparent that pinion 15 being driven by some external source ofpower will drive the medium of gear 11, the screen member rotatmg on itsbearings about the stationary shaft 1.

shaft 1 has mounted thereon a pair'of eccentric members'22. Referencemay be had, to Figs. 3 and 4 and a clearer understanding of the detailsof construction 1 now to be described. The details'of one'end only ofthe device are shown since the other end is identical. The eccentricmember 22 has an enlarged portion adjacent shaft -1 which is providedwith a pair of diametrically opposite threaded holes. A packing glandmember 23 surrounds shaft 1 and is attached to eccentric 22 by means ofa pair of threadedbolts'23 and 27 which are provided in extending ears24 and 25 of member 23. Any suitable packing material may be used toprovide a gastight joint. It will be understood that this feature of thedevice is a conventional one which is well known in mechanical arts. Co-

operating with eccentric 22 is an eccentric ring 28. Aap-lurality oflugs 29, which are adapted to be secured or attached to ring 28 by meansof bolts 30 and nuts '31, adjustably attach the eccentric to itsco-operating ring.

It will be apparent that by loosening bolts 26 and 27, the eccentric isloosened so that it may be rotated about shaft 1. By loosening bolts 30,the eccentric is detached from its ring member 28, so that the eccentricmay be rotated, thereby varying the position of its co-operating ring.While the details of only one eccentric and its ring member are shown inFig. 3, it will be understood that the construction at the other end ofshaft 1 isidentical therewith. Eccentric ring 28 is formed to have aperipheral flange 32, which has holes thereabout for the reception ofscrews 33. cylindricalmember 34 has peripherally arranged threaded holesat each end for the reception of thescrews 33. In this manner,

member 34 may be securely attached to the eccentric ring members 28 ateach end. This structure constitutes the out-er expansion 'member ofthedevice- :Member 34 is prolength.

It will be apparent that while the screen orsquirrel cage rotates aboutthe stationary shaftl, the cylindrical member 34 within the screenmember'is stationarya..By means of the adjustable feature shown, theposition :of member 34 may be varied with respect to the hollow shaft.This also varies the position of member 34 and its nozzle 35 withrespect to the rotating screen. A container 36 is provided, as-shown inFig. 2, for the material to be sprayed or distributed. This container isdisposed underneath the rotating screen *member, and may be provided ifdesired with S(1U.1IIGl cage or screen member through the Y '36 and willcarry themadjacent the slot nozzle 35, where they will be blownofl thescreen onto the article being coated. It will be un- ..derstood, ofcourse, that the article being coated, such for examplea's paper, may bemounted on rotating rolls arranged and driven in anysuitable manner soas to cause the paper to pass ad acent the nozzle and screen ataconstant speed. The compressed gas,

air for example, will pass through. the stationary shaft 1 and fromthere into the outer chamber through the nozzles. In doing so the gas isexpanded to such a degree that its pressure is uniform throughout.

A. device constructed in accordance with my invention possesses manydesirable features. It will be noted that the thickness of the coatingbeing distributed or sprayed on the particular article maybe regulatedin several ways. The speed of the rotating screen member may be adjustedby suitable regulating means. The speed of this member will partlydetermine the thickness of the coating being applied. Furthermore. the

speed of-the screen member maybe adjusted to'suit coating materials ofdifferent consistencies. For example, a material of light con sistencywould be more readily projected from the screen onto the paper than amaterial ent speeds of the rotating screen member would be required togive coatings 1n each case oftne same thickness. apparent that thecoating of the material will'depend upon the distance of nozzle 35' Bymeans of the from the screen member. ad ustable feature shown, the outercylindrical chamber may be ad usted both horizonthe screen. The coatingmay also bevaried I by varying the pressure of the incoming gas.

It is to be understood that any number of expansion chambers may beprovided. While I have shown a single embodiment having expandingnozzles for conveying the com-- pressed gaseous matter from an innerchamber to an outer expansion chamber, it will be apparent that agreater number of concentric members having expanding nozzles forconveying the compressed gas from one chamber to the next may beprovided. In this instance, of course, only the outermost chamber wouldbe adjustable. My invention contemplates broadly the idea of expandingthe gas in a series of concentric chambers before finally emitting itfrom an elongated nozzle provided on the outer member. It is also to beunderstood that various other ways than that shown may be usedfor'conveying the material to be sprayed from its container to a pointad acent the nozzle. Forexample, 1nstead of using a squirrel cagemember, a

screen conveyor could be mounted for rota-' tion about a plurality ofrotating rollers so that it would pass the nozzle. Another modificationwould be to have a plurality of tangentially arranged rollers forpicking up the material from its container, and have the noz zle blowthe material from the surface of such rollers.

It is, therefore, to be understood that my invention is not limited tothe single embodiment disclosed and described herein.- Theabove-indicated and other modifications of the device will be readilyapparent to those skilled in the art without departing from the spiritand scope of the invention. I desire it to be understood, therefore,that my invention is not to be limited by the specific. disclosureherein contained but only as is necessary in view of the prior art asindicated in the scope of the appended claims.

I claim:

1. In a spraying device for coating paper or the like, means forsupplying compressed gaseous matter to said device, means for expandingsaid matter to obtain uniform pressure thereof, means for carrying thematerial to be sprayed, means for directing an even stream of saidmatter against said carrying coated. I

means to project said material in a finely divided'state'on tothearticle to-be coated and ward and away from said carrying means. P 2;Ina spraying device forcoating paper gaseousmatter to said device,pressure-expandingmeans for said matter comprising a plurality ofintercommunicating expansion chambers, means for carrying the maternalto be sprayed, and means'for directin'ga wide and even.- stream-of saidmatter against said tally and vertically, thereby varying the positionof the emitting nozzle with respect to carrying means to project saidmaterial in a finely divided 3. Ina spraying device for coating paper=means for moving said directing meansl'td of heavler consistency, and,therefore, difierstate onto the articlei to be; 7

or the like, means for supplying-compressed v gaseous matter to saiddevice, pressure expanding means for said matter comprising a pluralityof concentrically arranged chambers having pressure expansion nozzlesfor the passage of said matter 'therebetween, the outermost chamberhaving an elongated slot nozzle for the emission of said matter in awide and even stream, and means for carryingparticles of thematerial tobe sprayed to a point'adjacent said nozzle, whereby the emitted matterblows said material of]? said carrying means on tothe article to becoated. 4. In a spraying device for coating paper orthe like, a hollowshaft serving as a conduit for compressed gaseous matter, a .pluralityof nozzles spaced about a substantial portion of the cylindrical surfaceof said I shaft, a cylindrical member adjustably mounted on said shaftand enclosing said nozzles to form an expansion chamber for said matter,said member having an axially disposed elongated slot nozzle for theemis I sion of said matter, a container disposed bet neath said nozzle,and rotatable means for lifting particles. of material fromsaidcontainer to a point adjacent saidnozzle, whereby said material maybe blown on to the article to be coated. V i 5. In a spraying device forcoating paper or the like, a hollow shaft serving as a conduit forcompressed gaseous matter, a plurality of nozzles spaced about asubstantial adapted to lift particles of material from said container toa point adjacent said nozzle, whereby said material may be blown on tothe article to be coated. I 6. In a spraying dev ce for coating paper orthe like, a hollow shaft serving as a conduit. for compressed gaseousmatter, a plurality of nozzles spaced about a substantial portion folthecylindrical surface of said shaft, ec-

centric members carried by said, shaft, a cylindrical member enclosingsaid nozzles to form an expansion chamber for said matter, eccentricrings carried by said cyllndrlcal member and cooperating witli saideccentric members, whereby said cylindrical member is vertically andhorizontally adjustable rela- 'tive to said shaft, said cylindricalmember having an axially disposed elongated. slot nozzle for theemission of said matter, a con- I tamer disposed beneath said nozzle,and rotatable means for lifting particles of the material from saidcontainer to a point adjacent said nozzle, whereby said materialmay beblown on to the article to be coated.

ROBERT K. MATLACK.

